<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <meta http-equiv="X-UA-Compatible" content="ie=edge">
  <title>图-更改画布尺寸</title>
</head>

<body>
  <button id="changeSize">更改画布尺寸</button>
  <div id="mountNode"></div>
  <script src="../build/g6.js"></script>
  <script>
    const data = {
      nodes: [{
        id: 'node1',
        x: 100,
        y: 200
      }, {
        id: 'node2',
        x: 300,
        y: 200
      }],
      edges: [{
        id: 'edge1',
        target: 'node2',
        source: 'node1'
      }]
    };
    const graph = new G6.Graph({
      container: 'mountNode',
      fitView: 'cc',
      height: window.innerHeight,
    });
    graph.read(data);
    graph.css({
      border: '1px solid red',
    });
    document.getElementById('changeSize').onclick = () => {
      graph.changeSize(250 + 250 * Math.random(), 250 + 250 * Math.random());
      graph.setFitView('cc');
    };

  </script>
</body>

</html>
